Fluid-pressure valve.



F. S. DENNEEN & J. R. BROWN. FLUID PRESSURE VALVE.

APPLICATION FILED AUG. 27, 1910. LUQAYO.

Patented July 16, 1912.

,z3 /7 ,Muulumlun uNrEp STATES PATENT OFFICE.

FRANCIS S. DENNEEN AND JOHN ROWLAND IBRO'W, OF MANSFIELJQ,

OHIO, ASSIGNOBS TO THE OHIO BRASS COMPANY, OF MANASFIELD, OHIO,A.CORE,()IR,AI`.IONy OF NEW JERSEY.

FLUID-PRESSURE VALVE.

Speeincation of Letters lfatent.

Application med august 2v, 191'0. serial No. :usarlav To all whom 'itmay concern.:

Beit known. that we, FRANCIS S. DEN- NEEN and Jol-IN R.' BROWN, citizensofthe United States, and both residing at Mansfield, in the county ofRichland and- State of Ohio, have invented cert-ain new and usefulImprovements in Fluid-Pressure Valves, of which thevfollowing is aspecification.

This invention relates to fluid pressure valves, and has for its primaryobject to provide a valve of improved construction, combination andarrangement of parts which shall be durable and eilicient in action, andby means of which the valve can be made susceptible to a light pressureon the valve' stem without the loss of pressure fluid medium around thevalve stem.

One of the objects of the present invention is to provide an improvedconstruction, combination and arrangement of parts in valve operatingmechanisms for devices of this nature.

Another object is to provide an improved valve operating lever andimproved means for mounting the same.

Other and further objects will appear in the specification and be morespecifically pointed out in the appended claims, reference being had tothe accompanying drawings exemplifying the invention, and inv which-Figure 1 is a cross section of a sander valve constructed in accordancewith the principles of this invention. Fig. 2 is a similar cross sectionof a whistle valve constructed in accordance with the principles of thisinvention. Fig. 3 is a top plan view of an engineers valve with twovalves constructed 1n accordance with t-he principles of this inventioncoperatively arranged therewith.

Referring more specifically to the drawings, and first of all to theembodiment shown in Fig. 1, a valve body 1 of well own constructioncomprises an inlet opening 2 and an outlet opening 3, with a valve seat4 operatably related to which is a valve 5 on a valve stem 6, said valvestem being provided with an extension '7 below, reciprocably supportedby a cap 8, which is threaded into an opening in the valve body orhousing 1. Extending around the portion 7 of the valve stem is a spiralspring 9, which coperates with the pressure of the iuid entering throughthe inlet 2, to hold the valve 5 to .of the valve body is provided avalve stem its seat In the upper wall opening through which the valvestem 6 roJ'ects, said opening being suiliciently arge to permit thevalve stem to slide freely -therethrough. Said body ortion or housing 1of the valve is provi ed above with a socket constituted by an annularthreaded flange 10 surrounding the outer end ofthe valve s tem.6. Seatedwithin-this socket is a flexible .diaphragm 11 of any suitable materlal,said diaphragm being Iimperforate and fluid tight, and preferablyresting at its center upon the upper end of the valve stem 6. In orderto clamp said diaphragm 11 about its edges within the socket 10, a plugor diaphragm nut 12 provided with an enlargement 13 seats upon thediaphragm 11, the outer peripheral edge of the enlarged portion 13 beingthreaded to engage the threaded socket partments, one above and theother below said diaphragm. The plug 12 is provided with a central axialopening within which is reciprocably mounted a plunger or diaphragm stem14 provided below with an enlargement or head 15, which preferably restsdirectly upon the diaphragm 1l. The central aperture in the diaphragmnut 12 is made of sullicient size to permit the plunger or diaphragmstem 14 to reciprocate freely therein, neither the valve stem 6, nor thediaphragm stem 14 being packed. Said stems are therefore mounted in sucha manner that they are easily reciprocated by a comparatively lightpressure. Ordinarily, considerable leakage would occur around the valvestem, and in order to make it possible to use a construction of thiskind without the attendant loss of fluid pressure, the diaphragm 11 isprovided, which forms a fluid tight closure for the opening in the upperwall of the valve housing.

In order to provide means ,for reciprocating the plunger 14 foroperating the valve stem 6, the operating lever 16 is pivotally mountedabout a pin 17 supported between two parallel cheeks or lugs 18. Thelugs 18 are preferably integral with a collar 19'1'0- tatably mountedupon the upper cylindrical portion of the diaphragm nut 12, said collarbeing provided on. one side with a protuberant portion 20 within whichis threaded a grub or other screw 21. The grub 21 is 10, thus providing.a.dia' phragm-conta1n1ng chamber with two comprovided with a pointedend to adapt it to engage a V-shap'ed groove 2.2 extendmgc1reumterentially around the upper portion of the plug 12. Said grub 21may be tightened and loosened to hold the collar fixed in any positionto which it may be 'adjusted upon said plug 1Q. ln order to make theoperating lever 16 removable, it is provided at its pivoted end with aslot 23 extending to the edge of said lever to permit it to be passedinto and out of engagement with the pivot 17. From an inspection of Fig.1, it will be. seen that the plunger 14 projects above the upper surfaceof the\plug 12. The lever 16 impinges upon the plu ger 14, for whichpurpose it is provided w th a flat portion 24, which flat portion, afterthe lever 16 has been depressed sufliciently to open the valve restsupon a protuberance or lug 25 to limit the downward movement of saidlever. Said lug 25 preferably forms an integral portion of the collar19. The. lever 16 is provided on its outer swinging end with a fingerhold 26, the valve 5 therefor being operable anywhere within a radiusequal to the length of the lever 16 from the axis of the valve stem 6.

Referring now to Fig. 2, which illustrates the application of theinvention to a whistle valve, all the parts are of exactly similarconstruction with the exception ot the .operating lever 27, which inthis embodiment comprises a short lever pivoted at 28 adjacent one endand provided with an eye 29 at its outer swinging end for the attachmentof a.. draw cord 30. Adjacent the inner end said lever is provided withan oiiset lug 31, which impinges directly -upon the dia phragm plunger14:.

It is, oftentimes desirable to have devices of this nature forcontrolling the deposit of sand on the track, and the sounding of thewhistle or alarm within easy reach of whichever hand the engineer mayemploy to loperate the engineers valve. For this purpose two valvesconstructed similarly' to that shown in Fig. 1 of the drawings may beconnected to the same air supply, and by means of the rotatablyadjustable handles 38 and 39, which may be set in any desired relationto the handle of the engineers valve, be employed to operate either thesander or the whistle. This arrangement is shown diagrammaticallyin-Fig. 3, in which the common air supply pipe is indicated at 32, beingprovided with a T 33. Connected in branch pipes 34, 35 are valves 36,3T, the operating levers 38, 39 of which may be revolved in the manneralready described to bring the finger holds 40, 41 adjacent to t-heoperating lever 42 of the engineers valve.

lVhile the sander valve is usually placed within easy reach of theengineers valve handle, it may, of course, be installed at any otherconvenient point in the car, the most important features yof this valveVbeing the non-leaking easy valve action, and the adjustable arrangementof the handle with respect to the valve body. Heretofore, much troublehas been experienced with whistle and sander valves because of theleakage around the valve stem when the valve is operating. If packing isused around this stem to prevent leakage, the valve spring which causesthe valve to close must be amply strong to overcome the resistance ofthe packing, so that this combination of cir-- cumstances would make thevalve too hard to operate satisfactorily with thumb pressure.

What I claim is:

1. The combination of a valve housing provided with a valve chamber anda diaphragm containing chamber, a valve and valvestem movably mounted insaid valve chamber, the valve stem projecting into the diaphragmchamber, a diaphragm against which the valve stem presses, a nut toclose the diaphragm chamber and to bind the ydiaphragm periphery againstthe valve housing, saidnut being formed with aprojection, a plunger stemextending through the said nut and bearing against the diaphragm, alever sea-ted in said projection and adapted to bear against the saidplunger stem to open the valve.

2. The combination of a valve housing provided with a valve chamber anda diaphragm containing chamber, a valve and valve stem movably mountedin the said valve chamber, the valve stem projecting into the diaphragmchamber, a diaphragm pressing against the valve stem, a nut to close thediaphragm chamber and to bind the diaphragm against thervalve housing,the nut being formed with a laterally grooved projecting portion, aplunger stem extending through the nut and bearing against thediaphragm, a collar mounted upon the projecting portion of the said nut,

means to secure the collar to said projecting portion, and a leverpivoted on the collar, the outer end of the plunger stem bearing againstthe lever and the lever being operable in conjunction therewith to openthe valve.

3. The combination of a valve housing provided with a valve chamber anda diaphragm containing chamber, a valve and valvestem movably mounted insaid valve chamber, the valve stem projecting into the. diaphragmchamber, a diaphragm pressing against the valve stem, a nut to close thediaphragm chamber and to bind the diaphragm against the valve housing,the nut being formed with a laterally grooved projecting portion, acollar formed with proje'cting lugs and movable about the said groovedportion, means to bind the collar to the said grooved member, a plungerstem extending through the nut, one end bearing upon the diaphragm andthe other end projeeting from the nut and a lever pivoted in the saidprojecting lugs, the lever bearing against the projecting end of theplunger stem to open the valve.

4. The combination of a valve housing provided with a valve chamber anda diaphragm containing chamber, a valve and valve stem movably mountedin said valve chamber, the valve st'ern projecting into the diaphragmchamber, a diaphragm pressing against the valve stem, a nut to close thediaphragm chamber and to bind the diaphragm against the valve housing,an adjustable collar formed with projecting lugs on opposite sides andadjustably mounted on the said nut, a plunger stem extending through thenut, and a lever pivoted in the projecting lugs at one side of thecollar, adapted to engage the stem, and engaged by the projecting lug atthe opposite side of the collar to stop the lever in the operation ofopening the valve..

5. The combination of a valve housing provided with a valve chamber anda diaphragm containing chamber, a valve seat arranged longitudinally ofthe housing7 a diaphragm and means to secure the same in the diaphragmchamber, a cap member opposite the diaphragm chamber in the housingformed with a cylindrical opening, a valve stem, one end of which ismovably mounted in the said cylindrical cap and the other end extendsthrough the housing to engage the diaphragm, a. valve on the valve stemto engage the valve seat and to stop the stem from distending thediaphragm, and resilient means to press the valve in engagement with thevalve seat.

6. The combination of a valve housing provided with a valve chamber anda diaphragm containing chamber, a valve seat arranged longitudinally ofthe housing, a diaphragm and means to secure the same in the diaphragmchamber, a removable cap member formed with an inner recess in alinementwith the valve opening, a valve stem one end of which is movably seatedin said recess and the other end of which extends through the valveopening and the housing wall into the diaphragm chamber, a valve mountedon the stem to close the valveopening, means to open the valve, and aspring engaging the valve and the recessed cap to close the valveopening.

In testimony whereof we have signed our names to this specification, inthe presence of two subscribing Witnesses, on this seventeenth day ofAugust A. D. 1910.

FRANCIS S. DENNEEN. JOHN ROWLAND BROVN. Witnesses for Denneen: M. J.ODoNoGHUE, C. C. CRoss. Witnesses for Brown: J. C. PAINTER, G. L.BUGHAN.

